Add table look support for conditional table formatting

[paradoxloop]

Implement <w:tblLook> element to control which conditional formatting from table styles is applied.

Table styles can define special formatting for first/last rows/columns and horizontal/vertical banding. The new tableLook option allows users to toggle which of these formatting options are applied table by table.

Supported attributes:

• firstRow
• lastRow
• firstColumn
• lastColumn
• noHBand; and
• noVBand

Changes:

• Add TableLook component with ITableLookOptions type
• Integrate tableLook option into Table component; and
• Update documentation

Reference: http://officeopenxml.com/WPtblLook.php

[paradoxloop]

What is being controlled is the toggle on left of screenshot.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (e79c69c) to head (f2cf1f4).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #3317   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          297       298    +1     
  Lines         9159      9182   +23     
  Branches      1456      1459    +3     
=========================================
+ Hits          9159      9182   +23     

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